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David and Marsha are going to dinner and a movie this evening. David wants to have at least $70 cash in his wallet. He currently has $10. Write and solve an inequality to find how much cash David should withdraw from the bank?

Sagot :

Answer:

  • At least $60

Step-by-step explanation:

David has $10, takes $x and his target is at least $70.

Required inequality:

  • x ≥ 70 - 10

Solution is:

  • x ≥ 60